May I suggest you be very prayerful about beginning to attend church. You cannot lead some one where you will not go. It would be advisable that you tell your spouse that you would like to return and make it clear that you would welcome them should they ever want to attend with you, but that it has to be their decision.
If you spouse asks you how church was when you return home, share something you learned. If a member asks how your family is doing, express their genuine interest to you family.
If you and your wife enjoy playing games, going out to dinner or attending sporting events or movies, ask her if you can invite friends from church to join you so she can get to know others with common interests. Then she may feel comfortable attending ward social activities. Your wife may have questions, that she doesn't want to ask you because she doesn't want to get your hopes up. Providing opportunities for her to make friends within your ward, will give her opportunities to get answers without being concerned about raising your expectations.
Ask your wife if you can occasionally invite the missionaries over or dinner. Make it clear that they routinely share a scriptural message with their hosts and that she is not being singled out.
When I was 19 and going through a divorce,(Yes, you read that correctly.) a friend of mine from high school who had recently joined The Church of Jesus Christ of Latter-day Saints invited me over for dinner and a singles family home evening group. I needed the fellowship and willingly attended. I am pretty outspoken and asked numerous questions. When the missionaries suggested that it would be easier to answer my questions if I listened to the missionary discussions, I felt a bit wary. Then I decided that I would listen, read and pray so I could genuinely tell my friend she had been deceived and bring her back to the Lutheran Church we both attended all our lives. What I wasn't bargaining for was the answers I received. I was baptized 3 weeks later. That was 46 years ago.
My spouse and 3 of our 4 children share my faith, but none of our extended family have embraced the Gospel. We do our best to stay connected to them all and lead by example the best we can. I have several friends who have married those who are not member's of The Church who have eventually embraced the gospel. For some it took a few years, for others 20-30 years. What is important is that you treat your spouse respectfully and show them love unfeigned for being the person who originally attracted you to them. Love and prayers, Lynn